Pendant group
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Pendant group
Side-group
An offshoot, neither oligomeric nor polymeric, from a chain.[1]
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In IUPAC nomenclature of chemistry, a pendant group (sometimes spelled pendent) or side group is a group of atoms attached to a backbone chain of a long molecule, usually a polymer. Pendant groups are different from pendant chains, as they are neither oligomeric nor polymeric.[2]
For example, the phenyl groups are the pendant groups on a polystyrene chain.
Large, bulky pendant groups such as adamantyl usually raise the glass transition temperature (Template:Mvar) of a polymer by preventing the chains from sliding past each other easily. Short alkyl pendant groups may lower the Template:Mvar by a lubricant effect.
References
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- ↑ IUPAC, Compendium of Chemical Terminology, 5th ed. (the "Gold Book") (2025). Online version: (2006–) "pendant group (side group)". Script error: No such module "CS1 identifiers".Script error: No such module "TemplatePar".
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